[KeplerBoy]

It's not an issue. The dry air insulates fairly well, so your body heats up slowly and you can last a few minutes.

[wongarsu]

Also in dry air evaporation cooling is very effective, so sweating gets rid of a lot of the heat before it can build up in your body

[throwaway290]

If you are talking dry air, then how does this apply to wet saunas at 100 degrees?

[KeplerBoy]

afaik there are no humid saunas nearly that hot. You'd have a miserable time in there and even breathing would hurt like hell.

[throwaway290]

Exactly, so here we are talking about dry 100C saunas in replies to someone claiming that Finns sit in wet 100C saunas every week. I find it hard to believe. Humidity makes a massive difference.